55011858 has 32 divisors (see below), whose sum is σ = 120813120. Its totient is φ = 16560960.

The previous prime is 55011841. The next prime is 55011871. The reversal of 55011858 is 85811055.

It is a super-2 number, since 2×55011858² = 6052609041224328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7708 + ... + 13016.

It is an arithmetic number, because the mean of its divisors is an integer number (3775410).

Almost surely, 2^55011858 is an apocalyptic number.

55011858 is an abundant number, since it is smaller than the sum of its proper divisors (65801262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55011858 is a wasteful number, since it uses less digits than its factorization.

55011858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5482.

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 55011858 is about 7416.9979102060. The cubic root of 55011858 is about 380.3225746639.

The spelling of 55011858 in words is "fifty-five million, eleven thousand, eight hundred fifty-eight".